<template>
	<div>
		<!-- 面包屑导航 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>权限管理</el-breadcrumb-item>
			<el-breadcrumb-item>角色列表</el-breadcrumb-item>
		</el-breadcrumb>
		<!-- 卡片视图 -->
		<el-card>
			<el-row>
				<el-col><el-button type="primary" @click="adduser">添加角色</el-button></el-col>
			</el-row>
			<!-- 角色列表 -->
			<el-table :data="rolelist" border stripe>
				<!-- 展开列 -->
				<el-table-column type="expand">
					<template slot-scope="scope">
						<el-row :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']" v-for="(item1, i1) in scope.row.children" :key="item1.id">
							<!-- 渲染一级权限 -->
							<el-col :span="5">
								<el-tag @close="removeRightById(scope.row, item1.id)" closable>{{ item1.authName }}</el-tag>
								<i class="el-icon-caret-right"></i>
							</el-col>
							<!-- 渲染二级和三级权限 -->
							<el-col :span="19">
								<!--通过 for 循环 嵌套 渲染二级权限 -->
								<el-row :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']" v-for="(item2, i2) in item1.children" :key="item2.id">
									<el-col :span="6">
										<el-tag type="success" @close="removeRightById(scope.row, item2.id)" closable>{{ item2.authName }}</el-tag>
										<i class="el-icon-caret-right"></i>
									</el-col>
									<el-col :span="18">0
										<el-tag @close="removeRightById(scope.row, item3.id)" type="warning" v-for="(item3, i3) in item2.children" :key="item3.id" closable>
											{{ item3.authName }}
										</el-tag>
									</el-col>
								</el-row>
							</el-col>
						</el-row>
					</template>
				</el-table-column>
				<!-- 索引列 -->
				<el-table-column type="" label="#" width="30px"></el-table-column>
				<el-table-column label="角色名称" prop="roleName"></el-table-column>
				<el-table-column label="角色描述" prop="roleDesc"></el-table-column>
				<el-table-column label="操作" width="300px">
					<template slot-scope="scope">
						<el-button size="mini" type="primary" icon="el-icon-search" @click="bjopen(scope.row.id)">编辑</el-button>
						<el-button size="mini" type="danger" icon="el-icon-delete" @click="del(scope.row.id)">删除</el-button>
						<el-button size="mini" type="warning" icon="el-icon-setting" @click="showSetrightDialog(scope.row)">分配权限</el-button>
					</template>
				</el-table-column>
			</el-table>
		</el-card>
		<!-- 分配权限-->
		<el-dialog title="提示" :visible.sync="setRightDialogVisible" width="50%" @close="setRightDialogClosed">
			<!-- 树形控件 -->
			<el-tree :data="rightslist" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defkeys" ref="treeRef"></el-tree>
			<span slot="footer" class="dialog-footer">
				<el-button @click="setRightDialogVisible = false">取 消</el-button>
				<el-button type="primary" @click="allotRights">确 定</el-button>
			</span>
		</el-dialog>
		<!-- 添加 -->
		<el-dialog title="提示" :visible.sync="addVisible" width="30%" :before-close="handleClose">
			<el-form ref="form" :model="addform" width="50%">
				<el-form-item label="角色名称"><el-input v-model="addform.roleName"></el-input></el-form-item>
				<el-form-item label="角色描述"><el-input v-model="addform.roleDesc"></el-input></el-form-item>
			</el-form>

			<span slot="footer" class="dialog-footer">
				<el-button @click="addVisible = false">取 消</el-button>
				<el-button type="primary" @click="addok">确 定</el-button>
			</span>
		</el-dialog>
		<!-- 编辑 -->
		<el-dialog title="提示" :visible.sync="bjdialog" width="50%" :before-close="handleClose1">
			<el-form ref="form" :model="bjform" width="50%">
				<el-form-item label="角色名称"><el-input v-model="bjform.roleName"></el-input></el-form-item>
				<el-form-item label="角色描述"><el-input v-model="bjform.roleDesc"></el-input></el-form-item>
			</el-form>
			<span slot="footer" class="dialog-footer">
				<el-button @click="bjdialog = false">取 消</el-button>
				<el-button type="primary" @click="bjadd(bjform.roleId)">确 定</el-button>
			</span>
		</el-dialog>
	</div>
</template>

<script>
export default {
	data() {
		return {
			rolelist: [],
			// 控制权限页显示隐藏
			setRightDialogVisible: false,
			// 所有权限的数据
			rightslist: [],
			treeProps: {
				label: 'authName',
				children: 'children'
			},
			defkeys: [],
			roleId: '',
			addVisible: false,
			addform: {
				roleName: '',
				roleDesc: ''
			},
			bjdialog: false,
			bjform: {
				roleName: '',
				roleDesc: '',
				roleId: ''
			}
		};
	},
	created() {
		this.getroleslist();
	},
	methods: {
		// 获取所有角色列表
		async getroleslist() {
			const { data: res } = await this.$http.get('roles');
			if (res.meta.status !== 200) {
				return this.$message.error('获取角色列表失败');
			}
			this.rolelist = res.data;
		},
		// 根据Id删除对应权限
		async removeRightById(role, rightId) {
			// 弹框提示是否删除
			const confirmResult = await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
				confirmButtonText: '确定',
				cancelButtonText: '取消',
				type: 'warning'
			}).catch(err => err);

			if (confirmResult !== 'confirm') {
				return this.$message.info('取消了删除！');
			}

			const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`);

			if (res.meta.status !== 200) {
				return this.$message.error('删除权限失败！');
			}
			role.children = res.data;
		},
		// 展示分配权限的对话框
		async showSetrightDialog(role) {
			this.roleId = role.id;
			// 获取所有权限数据
			const { data: res } = await this.$http.get('rights/tree');
			console.log(res);
			if (res.meta.status !== 200) {
				return this.$message.error('获取数据权限失败！');
			}

			// 获取到的权限数据保存到data中
			this.rightslist = res.data;
			console.log(this.rightslist);
			// 递归获取三级节点id
			this.getLeafkeys(role, this.defkeys);
			this.setRightDialogVisible = true;
		},
		// 获取角色下所有三级权限的Id并保存到数组中
		getLeafkeys(node, arr) {
			if (!node.children) {
				return arr.push(node.id);
			}

			node.children.forEach(item => {
				this.getLeafkeys(item, arr);
			});
		},
		// 分配权限对话框的关闭
		setRightDialogClosed() {
			this.defkeys = [];
		},
		//角色分配权限
		async allotRights() {
			const keys = [...this.$refs.treeRef.getCheckedKeys(), this.$refs.treeRef.getHalfCheckedKeys()];
			const idStr = keys.join(',');
			const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr });

			if (res.meta.status !== 200) {
				return this.$message.error('分配权限失败！');
			}
			this.$message.success('分配权限成功！');

			this.getroleslist();

			this.setRightDialogVisible = false;
		},
		// 添加
		adduser() {
			this.addVisible = true;
		},
		// 添加弹框右上角X事件
		handleClose(done) {
			this.$confirm('确认关闭？')
				.then(_ => {
					done();
				})
				.catch(_ => {});
		},
		// 添加角色对话框
		async addok() {
			const { data: res } = await this.$http.post('roles', this.addform);
			if (res.meta.status !== 201) {
				return console.log('创建失败！');
			}

			this.$message.success('创建成功！');
			this.addVisible = false;
			this.getroleslist();
		},
		// 删除对话框展开
		async del(id) {
			// 弹框询问用户是否删除
			const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
				confirmButtonText: '确定',
				cancelButtonText: '取消',
				type: 'warning'
			}).catch(err => err);
			// 如果用户确认删除，返回值为字符串confirm
			// 如果用户取消删除，则返回值为字符串cancel
			if (confirmResult !== 'confirm') {
				return this.$message.info('已取消删除');
			}
			const { data: res } = await this.$http.delete('roles/' + id);
			if (res.meta.status !== 200) {
				return this.$message.error('删除用户失败！');
			}
			this.$message.success('删除用户成功！');
			this.getroleslist();
		},
		// 修改用户对话框展开
		handleClose1(done) {
			this.$confirm('确认关闭？')
				.then(_ => {
					done();
				})
				.catch(_ => {});
		},
		async bjopen(id) {
			const { data: res } = await this.$http.get('roles/' + id);
			console.log(res);
			if (res.meta.status !== 200) {
				return this.$message.error('查询用户信息失败！');
			}
			this.bjform = res.data;
			this.bjdialog = true;
		},
		async bjadd(id) {
			const { data: res } = await this.$http.put('roles/' + id, this.bjform);
			console.log(res);
			if (res.meta.status !== 200) {
				return this.$message.error('修改用户信息失败！');
			}
			this.$message.success('修改用户信息成功！');
			this.bjdialog = false;
			this.getroleslist();
		}
	}
};
</script>

<style scoped>
.el-card {
	margin-top: 10px;
}
.el-pagination {
	margin-top: 10px;
}
.el-table {
	margin-top: 15px;
}
.el-tag {
	margin: 7px;
}
.bdtop {
	border-top: 1px solid #eee;
}
.bdbottom {
	border-bottom: 1px solid #eee;
}
.vcenter {
	display: flex;
	align-items: center;
}
</style>
